Kensington - Orbit Wireless Laser Trackball Mouse - Black

The Kensington trackball legacy continues with the latest addition to the patented Orbit Trackball with Scroll Ring - the Orbit Wireless Trackball with Scroll Ring. You asked for wireless, and we delivered, with the same great features that have made the Orbit Trackball with Scroll Ring so popular, including a patented scroll ring that allows you to scroll up & down pages with ease; customizable buttons; dual wireless connectivity offering the flexibility of 2.4 GHz and Bluetooth (3.0 and LE), with 128-bit AES government-grade encryption security; four DPI settings (400, 800, 1,200, or 1,600) that let you easily adjust the cursor speed to fit your needs; a detachable wrist rest; ambidextrous design; and plug-and-play ease for Mac or PC More from the Manufacturer

iMouse T40 - Wireless Programmable Ergonomic Trackball Mouse

The Kensington SlimBlade Pro Wireless Trackball centers a large 55mm finger-operated ball inside a flat ambidextrous chassis, serving designers, editors, engineers and office professionals who want fine pointer control in a compact footprint. The low-profile body wears a black and gray finish with rubberized side panels and a chrome-tone ring around the ball, and the symmetrical layout lets right-handed and left-handed people work from the same device without adjustment. Twist-to-scroll is the signature feature, since rotating the ball on its vertical axis scrolls documents and web pages with tactile feedback, freeing the top surface from a separate wheel. Dual optical sensors read the ball for tracking and rotation, and four switchable cursor speeds of 400, 800, 1200 and 1600 DPI cover everything from precise photo masking to broad sweeps across dual monitors. Four large top buttons combine into eight assignable actions through free KensingtonWorks software, so shortcuts, gestures and application-specific commands sit within a fingertip's reach. Three connection modes are supported, including wired operation through the braided USB cable, 2.4GHz wireless through the bundled nano receiver and Bluetooth for tablets and laptops, with 128-bit AES encryption securing wireless traffic. The rechargeable battery runs up to 4 months between charges and tops up over USB-C while the trackball remains in service. Plug-and-play setup works with Windows and macOS, and the low 286 gram mass keeps the unit planted on the desk during rapid ball spins.